Finding the Third Proportional to 314,784.75 and 674,484

Step by Step Solution

1. Step 1: Write the proportion equation
   314,784.75 : 674,484 = 674,484 : x
2. Step 2: Convert to fraction form
   314,784.75/674,484 = 674,484/x
3. Step 3: Cross multiply
   314,784.75x = 674,484 × 674,484
4. Step 4: Simplify right side
   314,784.75x = 454,928,666,256
5. Step 5: Solve for x
   x = 454,928,666,256/314,784.75
6. Step 6: Final answer
   x = 1,445,205.55