Finding the Third Proportional to 42,278 and 59,472

Step by Step Solution

1. Step 1: Write the proportion equation
   42,278 : 59,472 = 59,472 : x
2. Step 2: Convert to fraction form
   42,278/59,472 = 59,472/x
3. Step 3: Cross multiply
   42,278x = 59,472 × 59,472
4. Step 4: Simplify right side
   42,278x = 3,536,918,784
5. Step 5: Solve for x
   x = 3,536,918,784/42,278
6. Step 6: Final answer
   x = 83,658.61