Finding the Third Proportional to 39,411.56 and 58,978.13

Step by Step Solution

1. Step 1: Write the proportion equation
   39,411.56 : 58,978.13 = 58,978.13 : x
2. Step 2: Convert to fraction form
   39,411.56/58,978.13 = 58,978.13/x
3. Step 3: Cross multiply
   39,411.56x = 58,978.13 × 58,978.13
4. Step 4: Simplify right side
   39,411.56x = 3,478,419,228.52
5. Step 5: Solve for x
   x = 3,478,419,228.52/39,411.56
6. Step 6: Final answer
   x = 88,258.85