Finding the Third Proportional to 59,418 and 89,138.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,418 : 89,138.50 = 89,138.50 : x
2. Step 2: Convert to fraction form
   59,418/89,138.50 = 89,138.50/x
3. Step 3: Cross multiply
   59,418x = 89,138.50 × 89,138.50
4. Step 4: Simplify right side
   59,418x = 7,945,672,182.25
5. Step 5: Solve for x
   x = 7,945,672,182.25/59,418
6. Step 6: Final answer
   x = 133,725.00