Finding the Third Proportional to 138,279.50 and 301,587

Step by Step Solution

1. Step 1: Write the proportion equation
   138,279.50 : 301,587 = 301,587 : x
2. Step 2: Convert to fraction form
   138,279.50/301,587 = 301,587/x
3. Step 3: Cross multiply
   138,279.50x = 301,587 × 301,587
4. Step 4: Simplify right side
   138,279.50x = 90,954,718,569
5. Step 5: Solve for x
   x = 90,954,718,569/138,279.50
6. Step 6: Final answer
   x = 657,759.96