Finding the Third Proportional to 59,865 and 89,278.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,865 : 89,278.50 = 89,278.50 : x
2. Step 2: Convert to fraction form
   59,865/89,278.50 = 89,278.50/x
3. Step 3: Cross multiply
   59,865x = 89,278.50 × 89,278.50
4. Step 4: Simplify right side
   59,865x = 7,970,650,562.25
5. Step 5: Solve for x
   x = 7,970,650,562.25/59,865
6. Step 6: Final answer
   x = 133,143.75