Finding the Third Proportional to 78,090,426,481.50 and 109,968,528,447

Step by Step Solution

1. Step 1: Write the proportion equation
   78,090,426,481.50 : 109,968,528,447 = 109,968,528,447 : x
2. Step 2: Convert to fraction form
   78,090,426,481.50/109,968,528,447 = 109,968,528,447/x
3. Step 3: Cross multiply
   78,090,426,481.50x = 109,968,528,447 × 109,968,528,447
4. Step 4: Simplify right side
   78,090,426,481.50x = 12,093,077,248,798,648,958,976
5. Step 5: Solve for x
   x = 12,093,077,248,798,648,958,976/78,090,426,481.50
6. Step 6: Final answer
   x = 154,859,920,654.47