Finding the Third Proportional to 768,688 and 1,123,410

Step by Step Solution

1. Step 1: Write the proportion equation
   768,688 : 1,123,410 = 1,123,410 : x
2. Step 2: Convert to fraction form
   768,688/1,123,410 = 1,123,410/x
3. Step 3: Cross multiply
   768,688x = 1,123,410 × 1,123,410
4. Step 4: Simplify right side
   768,688x = 1,262,050,028,100
5. Step 5: Solve for x
   x = 1,262,050,028,100/768,688
6. Step 6: Final answer
   x = 1,641,823.51