Finding the Third Proportional to 288,883.50 and 635,412

Step by Step Solution

1. Step 1: Write the proportion equation
   288,883.50 : 635,412 = 635,412 : x
2. Step 2: Convert to fraction form
   288,883.50/635,412 = 635,412/x
3. Step 3: Cross multiply
   288,883.50x = 635,412 × 635,412
4. Step 4: Simplify right side
   288,883.50x = 403,748,409,744
5. Step 5: Solve for x
   x = 403,748,409,744/288,883.50
6. Step 6: Final answer
   x = 1,397,616.72