Finding the Third Proportional to 309,594 and 632,310

Step by Step Solution

1. Step 1: Write the proportion equation
   309,594 : 632,310 = 632,310 : x
2. Step 2: Convert to fraction form
   309,594/632,310 = 632,310/x
3. Step 3: Cross multiply
   309,594x = 632,310 × 632,310
4. Step 4: Simplify right side
   309,594x = 399,815,936,100
5. Step 5: Solve for x
   x = 399,815,936,100/309,594
6. Step 6: Final answer
   x = 1,291,420.17