Finding the Third Proportional to 138,646.50 and 283,849

Step by Step Solution

1. Step 1: Write the proportion equation
   138,646.50 : 283,849 = 283,849 : x
2. Step 2: Convert to fraction form
   138,646.50/283,849 = 283,849/x
3. Step 3: Cross multiply
   138,646.50x = 283,849 × 283,849
4. Step 4: Simplify right side
   138,646.50x = 80,570,254,801
5. Step 5: Solve for x
   x = 80,570,254,801/138,646.50
6. Step 6: Final answer
   x = 581,120.01