Finding the Third Proportional to 339,484 and 744,254

Step by Step Solution

1. Step 1: Write the proportion equation
   339,484 : 744,254 = 744,254 : x
2. Step 2: Convert to fraction form
   339,484/744,254 = 744,254/x
3. Step 3: Cross multiply
   339,484x = 744,254 × 744,254
4. Step 4: Simplify right side
   339,484x = 553,914,016,516
5. Step 5: Solve for x
   x = 553,914,016,516/339,484
6. Step 6: Final answer
   x = 1,631,635.12