Finding the Third Proportional to 78,090,428,826 and 109,968,531,589

Step by Step Solution

1. Step 1: Write the proportion equation
   78,090,428,826 : 109,968,531,589 = 109,968,531,589 : x
2. Step 2: Convert to fraction form
   78,090,428,826/109,968,531,589 = 109,968,531,589/x
3. Step 3: Cross multiply
   78,090,428,826x = 109,968,531,589 × 109,968,531,589
4. Step 4: Simplify right side
   78,090,428,826x = 12,093,077,939,840,891,224,064
5. Step 5: Solve for x
   x = 12,093,077,939,840,891,224,064/78,090,428,826
6. Step 6: Final answer
   x = 154,859,924,854.38