Finding the Third Proportional to 861,120 and 1,867,392

Step by Step Solution

1. Step 1: Write the proportion equation
   861,120 : 1,867,392 = 1,867,392 : x
2. Step 2: Convert to fraction form
   861,120/1,867,392 = 1,867,392/x
3. Step 3: Cross multiply
   861,120x = 1,867,392 × 1,867,392
4. Step 4: Simplify right side
   861,120x = 3,487,152,881,664
5. Step 5: Solve for x
   x = 3,487,152,881,664/861,120
6. Step 6: Final answer
   x = 4,049,555.09