Finding the Third Proportional to 42,631.50 and 64,542

Step by Step Solution

1. Step 1: Write the proportion equation
   42,631.50 : 64,542 = 64,542 : x
2. Step 2: Convert to fraction form
   42,631.50/64,542 = 64,542/x
3. Step 3: Cross multiply
   42,631.50x = 64,542 × 64,542
4. Step 4: Simplify right side
   42,631.50x = 4,165,669,764
5. Step 5: Solve for x
   x = 4,165,669,764/42,631.50
6. Step 6: Final answer
   x = 97,713.42