Finding the Third Proportional to 58,387.50 and 90,315.75

Step by Step Solution

1. Step 1: Write the proportion equation
   58,387.50 : 90,315.75 = 90,315.75 : x
2. Step 2: Convert to fraction form
   58,387.50/90,315.75 = 90,315.75/x
3. Step 3: Cross multiply
   58,387.50x = 90,315.75 × 90,315.75
4. Step 4: Simplify right side
   58,387.50x = 8,156,934,698.06
5. Step 5: Solve for x
   x = 8,156,934,698.06/58,387.50
6. Step 6: Final answer
   x = 139,703.44