Finding the Third Proportional to 309,602 and 632,322

Step by Step Solution

1. Step 1: Write the proportion equation
   309,602 : 632,322 = 632,322 : x
2. Step 2: Convert to fraction form
   309,602/632,322 = 632,322/x
3. Step 3: Cross multiply
   309,602x = 632,322 × 632,322
4. Step 4: Simplify right side
   309,602x = 399,831,111,684
5. Step 5: Solve for x
   x = 399,831,111,684/309,602
6. Step 6: Final answer
   x = 1,291,435.82