Finding the Third Proportional to 42,192 and 64,746

Step by Step Solution

1. Step 1: Write the proportion equation
   42,192 : 64,746 = 64,746 : x
2. Step 2: Convert to fraction form
   42,192/64,746 = 64,746/x
3. Step 3: Cross multiply
   42,192x = 64,746 × 64,746
4. Step 4: Simplify right side
   42,192x = 4,192,044,516
5. Step 5: Solve for x
   x = 4,192,044,516/42,192
6. Step 6: Final answer
   x = 99,356.38