Finding the Third Proportional to 72,418 and 151,459

Step by Step Solution

1. Step 1: Write the proportion equation
   72,418 : 151,459 = 151,459 : x
2. Step 2: Convert to fraction form
   72,418/151,459 = 151,459/x
3. Step 3: Cross multiply
   72,418x = 151,459 × 151,459
4. Step 4: Simplify right side
   72,418x = 22,939,828,681
5. Step 5: Solve for x
   x = 22,939,828,681/72,418
6. Step 6: Final answer
   x = 316,769.71