Finding the Third Proportional to 31,273 and 63,820

Step by Step Solution

1. Step 1: Write the proportion equation
   31,273 : 63,820 = 63,820 : x
2. Step 2: Convert to fraction form
   31,273/63,820 = 63,820/x
3. Step 3: Cross multiply
   31,273x = 63,820 × 63,820
4. Step 4: Simplify right side
   31,273x = 4,072,992,400
5. Step 5: Solve for x
   x = 4,072,992,400/31,273
6. Step 6: Final answer
   x = 130,239.90