Finding the Third Proportional to 1,148,256 and 1,689,156

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148,256 : 1,689,156 = 1,689,156 : x
2. Step 2: Convert to fraction form
   1,148,256/1,689,156 = 1,689,156/x
3. Step 3: Cross multiply
   1,148,256x = 1,689,156 × 1,689,156
4. Step 4: Simplify right side
   1,148,256x = 2,853,247,992,336
5. Step 5: Solve for x
   x = 2,853,247,992,336/1,148,256
6. Step 6: Final answer
   x = 2,484,853.55