Finding the Third Proportional to 35,841,967.50 and 78,651,231

Step by Step Solution

1. Step 1: Write the proportion equation
   35,841,967.50 : 78,651,231 = 78,651,231 : x
2. Step 2: Convert to fraction form
   35,841,967.50/78,651,231 = 78,651,231/x
3. Step 3: Cross multiply
   35,841,967.50x = 78,651,231 × 78,651,231
4. Step 4: Simplify right side
   35,841,967.50x = 6,186,016,137,815,361
5. Step 5: Solve for x
   x = 6,186,016,137,815,361/35,841,967.50
6. Step 6: Final answer
   x = 172,591,421.99