Finding the Third Proportional to 784,638 and 1,663,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   784,638 : 1,663,435.50 = 1,663,435.50 : x
2. Step 2: Convert to fraction form
   784,638/1,663,435.50 = 1,663,435.50/x
3. Step 3: Cross multiply
   784,638x = 1,663,435.50 × 1,663,435.50
4. Step 4: Simplify right side
   784,638x = 2,767,017,662,660.25
5. Step 5: Solve for x
   x = 2,767,017,662,660.25/784,638
6. Step 6: Final answer
   x = 3,526,489.49