Finding the Third Proportional to 72,298 and 156,663

Step by Step Solution

1. Step 1: Write the proportion equation
   72,298 : 156,663 = 156,663 : x
2. Step 2: Convert to fraction form
   72,298/156,663 = 156,663/x
3. Step 3: Cross multiply
   72,298x = 156,663 × 156,663
4. Step 4: Simplify right side
   72,298x = 24,543,295,569
5. Step 5: Solve for x
   x = 24,543,295,569/72,298
6. Step 6: Final answer
   x = 339,474.06