Finding the Third Proportional to 60,681 and 90,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,681 : 90,553.50 = 90,553.50 : x
2. Step 2: Convert to fraction form
   60,681/90,553.50 = 90,553.50/x
3. Step 3: Cross multiply
   60,681x = 90,553.50 × 90,553.50
4. Step 4: Simplify right side
   60,681x = 8,199,936,362.25
5. Step 5: Solve for x
   x = 8,199,936,362.25/60,681
6. Step 6: Final answer
   x = 135,131.86