Finding the Third Proportional to 31,280 and 63,836

Step by Step Solution

1. Step 1: Write the proportion equation
   31,280 : 63,836 = 63,836 : x
2. Step 2: Convert to fraction form
   31,280/63,836 = 63,836/x
3. Step 3: Cross multiply
   31,280x = 63,836 × 63,836
4. Step 4: Simplify right side
   31,280x = 4,075,034,896
5. Step 5: Solve for x
   x = 4,075,034,896/31,280
6. Step 6: Final answer
   x = 130,276.05