Finding the Third Proportional to 292,287 and 628,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   292,287 : 628,086.50 = 628,086.50 : x
2. Step 2: Convert to fraction form
   292,287/628,086.50 = 628,086.50/x
3. Step 3: Cross multiply
   292,287x = 628,086.50 × 628,086.50
4. Step 4: Simplify right side
   292,287x = 394,492,651,482.25
5. Step 5: Solve for x
   x = 394,492,651,482.25/292,287
6. Step 6: Final answer
   x = 1,349,675.67