Finding the Third Proportional to 777,846 and 1,688,478

Step by Step Solution

1. Step 1: Write the proportion equation
   777,846 : 1,688,478 = 1,688,478 : x
2. Step 2: Convert to fraction form
   777,846/1,688,478 = 1,688,478/x
3. Step 3: Cross multiply
   777,846x = 1,688,478 × 1,688,478
4. Step 4: Simplify right side
   777,846x = 2,850,957,956,484
5. Step 5: Solve for x
   x = 2,850,957,956,484/777,846
6. Step 6: Final answer
   x = 3,665,195.88