Finding the Third Proportional to 688,905 and 1,006,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   688,905 : 1,006,141.50 = 1,006,141.50 : x
2. Step 2: Convert to fraction form
   688,905/1,006,141.50 = 1,006,141.50/x
3. Step 3: Cross multiply
   688,905x = 1,006,141.50 × 1,006,141.50
4. Step 4: Simplify right side
   688,905x = 1,012,320,718,022.25
5. Step 5: Solve for x
   x = 1,012,320,718,022.25/688,905
6. Step 6: Final answer
   x = 1,469,463.45