Finding the Third Proportional to 613,428 and 931,180

Step by Step Solution

1. Step 1: Write the proportion equation
   613,428 : 931,180 = 931,180 : x
2. Step 2: Convert to fraction form
   613,428/931,180 = 931,180/x
3. Step 3: Cross multiply
   613,428x = 931,180 × 931,180
4. Step 4: Simplify right side
   613,428x = 867,096,192,400
5. Step 5: Solve for x
   x = 867,096,192,400/613,428
6. Step 6: Final answer
   x = 1,413,525.62