Finding the Third Proportional to 42,565 and 64,439

Step by Step Solution

1. Step 1: Write the proportion equation
   42,565 : 64,439 = 64,439 : x
2. Step 2: Convert to fraction form
   42,565/64,439 = 64,439/x
3. Step 3: Cross multiply
   42,565x = 64,439 × 64,439
4. Step 4: Simplify right side
   42,565x = 4,152,384,721
5. Step 5: Solve for x
   x = 4,152,384,721/42,565
6. Step 6: Final answer
   x = 97,553.97