Finding the Third Proportional to 31,356 and 63,522

Step by Step Solution

1. Step 1: Write the proportion equation
   31,356 : 63,522 = 63,522 : x
2. Step 2: Convert to fraction form
   31,356/63,522 = 63,522/x
3. Step 3: Cross multiply
   31,356x = 63,522 × 63,522
4. Step 4: Simplify right side
   31,356x = 4,035,044,484
5. Step 5: Solve for x
   x = 4,035,044,484/31,356
6. Step 6: Final answer
   x = 128,684.92