Finding the Third Proportional to 42,548 and 64,478

Step by Step Solution

1. Step 1: Write the proportion equation
   42,548 : 64,478 = 64,478 : x
2. Step 2: Convert to fraction form
   42,548/64,478 = 64,478/x
3. Step 3: Cross multiply
   42,548x = 64,478 × 64,478
4. Step 4: Simplify right side
   42,548x = 4,157,412,484
5. Step 5: Solve for x
   x = 4,157,412,484/42,548
6. Step 6: Final answer
   x = 97,711.11