Finding the Third Proportional to 58,354.88 and 90,123.75

Step by Step Solution

1. Step 1: Write the proportion equation
   58,354.88 : 90,123.75 = 90,123.75 : x
2. Step 2: Convert to fraction form
   58,354.88/90,123.75 = 90,123.75/x
3. Step 3: Cross multiply
   58,354.88x = 90,123.75 × 90,123.75
4. Step 4: Simplify right side
   58,354.88x = 8,122,290,314.06
5. Step 5: Solve for x
   x = 8,122,290,314.06/58,354.88
6. Step 6: Final answer
   x = 139,187.86