Finding the Third Proportional to 290,773.50 and 635,553

Step by Step Solution

1. Step 1: Write the proportion equation
   290,773.50 : 635,553 = 635,553 : x
2. Step 2: Convert to fraction form
   290,773.50/635,553 = 635,553/x
3. Step 3: Cross multiply
   290,773.50x = 635,553 × 635,553
4. Step 4: Simplify right side
   290,773.50x = 403,927,615,809
5. Step 5: Solve for x
   x = 403,927,615,809/290,773.50
6. Step 6: Final answer
   x = 1,389,148.65