Finding the Third Proportional to 838,610 and 1,117,300

Step by Step Solution

1. Step 1: Write the proportion equation
   838,610 : 1,117,300 = 1,117,300 : x
2. Step 2: Convert to fraction form
   838,610/1,117,300 = 1,117,300/x
3. Step 3: Cross multiply
   838,610x = 1,117,300 × 1,117,300
4. Step 4: Simplify right side
   838,610x = 1,248,359,290,000
5. Step 5: Solve for x
   x = 1,248,359,290,000/838,610
6. Step 6: Final answer
   x = 1,488,605.30