Finding the Third Proportional to 486,112 and 760,830.25

Step by Step Solution

1. Step 1: Write the proportion equation
   486,112 : 760,830.25 = 760,830.25 : x
2. Step 2: Convert to fraction form
   486,112/760,830.25 = 760,830.25/x
3. Step 3: Cross multiply
   486,112x = 760,830.25 × 760,830.25
4. Step 4: Simplify right side
   486,112x = 578,862,669,315.06
5. Step 5: Solve for x
   x = 578,862,669,315.06/486,112
6. Step 6: Final answer
   x = 1,190,801.03