Finding the Third Proportional to 900,638 and 1,393,034

Step by Step Solution

1. Step 1: Write the proportion equation
   900,638 : 1,393,034 = 1,393,034 : x
2. Step 2: Convert to fraction form
   900,638/1,393,034 = 1,393,034/x
3. Step 3: Cross multiply
   900,638x = 1,393,034 × 1,393,034
4. Step 4: Simplify right side
   900,638x = 1,940,543,725,156
5. Step 5: Solve for x
   x = 1,940,543,725,156/900,638
6. Step 6: Final answer
   x = 2,154,632.30