Finding the Third Proportional to 42,117.50 and 61,529

Step by Step Solution

1. Step 1: Write the proportion equation
   42,117.50 : 61,529 = 61,529 : x
2. Step 2: Convert to fraction form
   42,117.50/61,529 = 61,529/x
3. Step 3: Cross multiply
   42,117.50x = 61,529 × 61,529
4. Step 4: Simplify right side
   42,117.50x = 3,785,817,841
5. Step 5: Solve for x
   x = 3,785,817,841/42,117.50
6. Step 6: Final answer
   x = 89,887.05