Finding the Third Proportional to 59,336.61 and 129,938.55

Step by Step Solution

1. Step 1: Write the proportion equation
   59,336.61 : 129,938.55 = 129,938.55 : x
2. Step 2: Convert to fraction form
   59,336.61/129,938.55 = 129,938.55/x
3. Step 3: Cross multiply
   59,336.61x = 129,938.55 × 129,938.55
4. Step 4: Simplify right side
   59,336.61x = 16,884,027,994.28
5. Step 5: Solve for x
   x = 16,884,027,994.28/59,336.61
6. Step 6: Final answer
   x = 284,546.54