Finding the Third Proportional to 78,090,426,498 and 109,968,528,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,090,426,498 : 109,968,528,481.50 = 109,968,528,481.50 : x
2. Step 2: Convert to fraction form
   78,090,426,498/109,968,528,481.50 = 109,968,528,481.50/x
3. Step 3: Cross multiply
   78,090,426,498x = 109,968,528,481.50 × 109,968,528,481.50
4. Step 4: Simplify right side
   78,090,426,498x = 12,093,077,256,386,476,244,992
5. Step 5: Solve for x
   x = 12,093,077,256,386,476,244,992/78,090,426,498
6. Step 6: Final answer
   x = 154,859,920,718.91