Finding the Third Proportional to 1,398,343.50 and 2,116,423.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,343.50 : 2,116,423.69 = 2,116,423.69 : x
2. Step 2: Convert to fraction form
   1,398,343.50/2,116,423.69 = 2,116,423.69/x
3. Step 3: Cross multiply
   1,398,343.50x = 2,116,423.69 × 2,116,423.69
4. Step 4: Simplify right side
   1,398,343.50x = 4,479,249,225,011.10
5. Step 5: Solve for x
   x = 4,479,249,225,011.10/1,398,343.50
6. Step 6: Final answer
   x = 3,203,253.87