Finding the Third Proportional to 59,191.50 and 90,549

Step by Step Solution

1. Step 1: Write the proportion equation
   59,191.50 : 90,549 = 90,549 : x
2. Step 2: Convert to fraction form
   59,191.50/90,549 = 90,549/x
3. Step 3: Cross multiply
   59,191.50x = 90,549 × 90,549
4. Step 4: Simplify right side
   59,191.50x = 8,199,121,401
5. Step 5: Solve for x
   x = 8,199,121,401/59,191.50
6. Step 6: Final answer
   x = 138,518.56