Finding the Third Proportional to 31,570 and 69,392

Step by Step Solution

1. Step 1: Write the proportion equation
   31,570 : 69,392 = 69,392 : x
2. Step 2: Convert to fraction form
   31,570/69,392 = 69,392/x
3. Step 3: Cross multiply
   31,570x = 69,392 × 69,392
4. Step 4: Simplify right side
   31,570x = 4,815,249,664
5. Step 5: Solve for x
   x = 4,815,249,664/31,570
6. Step 6: Final answer
   x = 152,526.12