Finding the Third Proportional to 838,422 and 1,818,630

Step by Step Solution

1. Step 1: Write the proportion equation
   838,422 : 1,818,630 = 1,818,630 : x
2. Step 2: Convert to fraction form
   838,422/1,818,630 = 1,818,630/x
3. Step 3: Cross multiply
   838,422x = 1,818,630 × 1,818,630
4. Step 4: Simplify right side
   838,422x = 3,307,415,076,900
5. Step 5: Solve for x
   x = 3,307,415,076,900/838,422
6. Step 6: Final answer
   x = 3,944,809.51