Finding the Third Proportional to 63,570 and 138,066

Step by Step Solution

1. Step 1: Write the proportion equation
   63,570 : 138,066 = 138,066 : x
2. Step 2: Convert to fraction form
   63,570/138,066 = 138,066/x
3. Step 3: Cross multiply
   63,570x = 138,066 × 138,066
4. Step 4: Simplify right side
   63,570x = 19,062,220,356
5. Step 5: Solve for x
   x = 19,062,220,356/63,570
6. Step 6: Final answer
   x = 299,861.89