Finding the Third Proportional to 838,390 and 1,810,188

Step by Step Solution

1. Step 1: Write the proportion equation
   838,390 : 1,810,188 = 1,810,188 : x
2. Step 2: Convert to fraction form
   838,390/1,810,188 = 1,810,188/x
3. Step 3: Cross multiply
   838,390x = 1,810,188 × 1,810,188
4. Step 4: Simplify right side
   838,390x = 3,276,780,595,344
5. Step 5: Solve for x
   x = 3,276,780,595,344/838,390
6. Step 6: Final answer
   x = 3,908,420.42