Finding the Third Proportional to 31,269.75 and 63,813

Step by Step Solution

1. Step 1: Write the proportion equation
   31,269.75 : 63,813 = 63,813 : x
2. Step 2: Convert to fraction form
   31,269.75/63,813 = 63,813/x
3. Step 3: Cross multiply
   31,269.75x = 63,813 × 63,813
4. Step 4: Simplify right side
   31,269.75x = 4,072,098,969
5. Step 5: Solve for x
   x = 4,072,098,969/31,269.75
6. Step 6: Final answer
   x = 130,224.86