Finding the Third Proportional to 72,156 and 157,428

Step by Step Solution

1. Step 1: Write the proportion equation
   72,156 : 157,428 = 157,428 : x
2. Step 2: Convert to fraction form
   72,156/157,428 = 157,428/x
3. Step 3: Cross multiply
   72,156x = 157,428 × 157,428
4. Step 4: Simplify right side
   72,156x = 24,783,575,184
5. Step 5: Solve for x
   x = 24,783,575,184/72,156
6. Step 6: Final answer
   x = 343,472.13