Finding the Third Proportional to 76,411 and 99,847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,411 : 99,847.50 = 99,847.50 : x
2. Step 2: Convert to fraction form
   76,411/99,847.50 = 99,847.50/x
3. Step 3: Cross multiply
   76,411x = 99,847.50 × 99,847.50
4. Step 4: Simplify right side
   76,411x = 9,969,523,256.25
5. Step 5: Solve for x
   x = 9,969,523,256.25/76,411
6. Step 6: Final answer
   x = 130,472.36