Finding the Third Proportional to 861,730 and 1,851,396

Step by Step Solution

1. Step 1: Write the proportion equation
   861,730 : 1,851,396 = 1,851,396 : x
2. Step 2: Convert to fraction form
   861,730/1,851,396 = 1,851,396/x
3. Step 3: Cross multiply
   861,730x = 1,851,396 × 1,851,396
4. Step 4: Simplify right side
   861,730x = 3,427,667,148,816
5. Step 5: Solve for x
   x = 3,427,667,148,816/861,730
6. Step 6: Final answer
   x = 3,977,657.91