Finding the Third Proportional to 15,120 and 32,428

Step by Step Solution

1. Step 1: Write the proportion equation
   15,120 : 32,428 = 32,428 : x
2. Step 2: Convert to fraction form
   15,120/32,428 = 32,428/x
3. Step 3: Cross multiply
   15,120x = 32,428 × 32,428
4. Step 4: Simplify right side
   15,120x = 1,051,575,184
5. Step 5: Solve for x
   x = 1,051,575,184/15,120
6. Step 6: Final answer
   x = 69,548.62