Finding the Third Proportional to 678,745 and 997,340.88

Step by Step Solution

1. Step 1: Write the proportion equation
   678,745 : 997,340.88 = 997,340.88 : x
2. Step 2: Convert to fraction form
   678,745/997,340.88 = 997,340.88/x
3. Step 3: Cross multiply
   678,745x = 997,340.88 × 997,340.88
4. Step 4: Simplify right side
   678,745x = 994,688,820,945.77
5. Step 5: Solve for x
   x = 994,688,820,945.77/678,745
6. Step 6: Final answer
   x = 1,465,482.35