Finding the Third Proportional to 783,128 and 1,246,116

Step by Step Solution

1. Step 1: Write the proportion equation
   783,128 : 1,246,116 = 1,246,116 : x
2. Step 2: Convert to fraction form
   783,128/1,246,116 = 1,246,116/x
3. Step 3: Cross multiply
   783,128x = 1,246,116 × 1,246,116
4. Step 4: Simplify right side
   783,128x = 1,552,805,085,456
5. Step 5: Solve for x
   x = 1,552,805,085,456/783,128
6. Step 6: Final answer
   x = 1,982,824.12