Finding the Third Proportional to 76,780,272 and 117,736,656

Step by Step Solution

1. Step 1: Write the proportion equation
   76,780,272 : 117,736,656 = 117,736,656 : x
2. Step 2: Convert to fraction form
   76,780,272/117,736,656 = 117,736,656/x
3. Step 3: Cross multiply
   76,780,272x = 117,736,656 × 117,736,656
4. Step 4: Simplify right side
   76,780,272x = 13,861,920,166,062,336
5. Step 5: Solve for x
   x = 13,861,920,166,062,336/76,780,272
6. Step 6: Final answer
   x = 180,540,128.41