Finding the Third Proportional to 281,658 and 626,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   281,658 : 626,287.50 = 626,287.50 : x
2. Step 2: Convert to fraction form
   281,658/626,287.50 = 626,287.50/x
3. Step 3: Cross multiply
   281,658x = 626,287.50 × 626,287.50
4. Step 4: Simplify right side
   281,658x = 392,236,032,656.25
5. Step 5: Solve for x
   x = 392,236,032,656.25/281,658
6. Step 6: Final answer
   x = 1,392,596.81