Finding the Third Proportional to 688,158 and 1,424,700

Step by Step Solution

1. Step 1: Write the proportion equation
   688,158 : 1,424,700 = 1,424,700 : x
2. Step 2: Convert to fraction form
   688,158/1,424,700 = 1,424,700/x
3. Step 3: Cross multiply
   688,158x = 1,424,700 × 1,424,700
4. Step 4: Simplify right side
   688,158x = 2,029,770,090,000
5. Step 5: Solve for x
   x = 2,029,770,090,000/688,158
6. Step 6: Final answer
   x = 2,949,569.85