Finding the Third Proportional to 374,314.50 and 586,428

Step by Step Solution

1. Step 1: Write the proportion equation
   374,314.50 : 586,428 = 586,428 : x
2. Step 2: Convert to fraction form
   374,314.50/586,428 = 586,428/x
3. Step 3: Cross multiply
   374,314.50x = 586,428 × 586,428
4. Step 4: Simplify right side
   374,314.50x = 343,897,799,184
5. Step 5: Solve for x
   x = 343,897,799,184/374,314.50
6. Step 6: Final answer
   x = 918,740.26