Finding the Third Proportional to 33,312 and 72,428

Step by Step Solution

1. Step 1: Write the proportion equation
   33,312 : 72,428 = 72,428 : x
2. Step 2: Convert to fraction form
   33,312/72,428 = 72,428/x
3. Step 3: Cross multiply
   33,312x = 72,428 × 72,428
4. Step 4: Simplify right side
   33,312x = 5,245,815,184
5. Step 5: Solve for x
   x = 5,245,815,184/33,312
6. Step 6: Final answer
   x = 157,475.24