Finding the Third Proportional to 33,428 and 72,310

Step by Step Solution

1. Step 1: Write the proportion equation
   33,428 : 72,310 = 72,310 : x
2. Step 2: Convert to fraction form
   33,428/72,310 = 72,310/x
3. Step 3: Cross multiply
   33,428x = 72,310 × 72,310
4. Step 4: Simplify right side
   33,428x = 5,228,736,100
5. Step 5: Solve for x
   x = 5,228,736,100/33,428
6. Step 6: Final answer
   x = 156,417.86