Finding the Third Proportional to 398,184 and 862,798.50

Step by Step Solution

1. Step 1: Write the proportion equation
   398,184 : 862,798.50 = 862,798.50 : x
2. Step 2: Convert to fraction form
   398,184/862,798.50 = 862,798.50/x
3. Step 3: Cross multiply
   398,184x = 862,798.50 × 862,798.50
4. Step 4: Simplify right side
   398,184x = 744,421,251,602.25
5. Step 5: Solve for x
   x = 744,421,251,602.25/398,184
6. Step 6: Final answer
   x = 1,869,540.84