Finding the Third Proportional to 58,612.50 and 90,699.75

Step by Step Solution

1. Step 1: Write the proportion equation
   58,612.50 : 90,699.75 = 90,699.75 : x
2. Step 2: Convert to fraction form
   58,612.50/90,699.75 = 90,699.75/x
3. Step 3: Cross multiply
   58,612.50x = 90,699.75 × 90,699.75
4. Step 4: Simplify right side
   58,612.50x = 8,226,444,650.06
5. Step 5: Solve for x
   x = 8,226,444,650.06/58,612.50
6. Step 6: Final answer
   x = 140,353.08