Finding the Third Proportional to 64,683 and 141,389

Step by Step Solution

1. Step 1: Write the proportion equation
   64,683 : 141,389 = 141,389 : x
2. Step 2: Convert to fraction form
   64,683/141,389 = 141,389/x
3. Step 3: Cross multiply
   64,683x = 141,389 × 141,389
4. Step 4: Simplify right side
   64,683x = 19,990,849,321
5. Step 5: Solve for x
   x = 19,990,849,321/64,683
6. Step 6: Final answer
   x = 309,058.78