Finding the Third Proportional to 864,209 and 1,244,838

Step by Step Solution

1. Step 1: Write the proportion equation
   864,209 : 1,244,838 = 1,244,838 : x
2. Step 2: Convert to fraction form
   864,209/1,244,838 = 1,244,838/x
3. Step 3: Cross multiply
   864,209x = 1,244,838 × 1,244,838
4. Step 4: Simplify right side
   864,209x = 1,549,621,646,244
5. Step 5: Solve for x
   x = 1,549,621,646,244/864,209
6. Step 6: Final answer
   x = 1,793,109.82