Finding the Third Proportional to 840,103.50 and 1,321,389

Step by Step Solution

1. Step 1: Write the proportion equation
   840,103.50 : 1,321,389 = 1,321,389 : x
2. Step 2: Convert to fraction form
   840,103.50/1,321,389 = 1,321,389/x
3. Step 3: Cross multiply
   840,103.50x = 1,321,389 × 1,321,389
4. Step 4: Simplify right side
   840,103.50x = 1,746,068,889,321
5. Step 5: Solve for x
   x = 1,746,068,889,321/840,103.50
6. Step 6: Final answer
   x = 2,078,397.35