Finding the Third Proportional to 76,900.50 and 103,470.75

Step by Step Solution

1. Step 1: Write the proportion equation
   76,900.50 : 103,470.75 = 103,470.75 : x
2. Step 2: Convert to fraction form
   76,900.50/103,470.75 = 103,470.75/x
3. Step 3: Cross multiply
   76,900.50x = 103,470.75 × 103,470.75
4. Step 4: Simplify right side
   76,900.50x = 10,706,196,105.56
5. Step 5: Solve for x
   x = 10,706,196,105.56/76,900.50
6. Step 6: Final answer
   x = 139,221.41