Finding the Third Proportional to 1,689,432 and 3,406,512

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,432 : 3,406,512 = 3,406,512 : x
2. Step 2: Convert to fraction form
   1,689,432/3,406,512 = 3,406,512/x
3. Step 3: Cross multiply
   1,689,432x = 3,406,512 × 3,406,512
4. Step 4: Simplify right side
   1,689,432x = 11,604,324,006,144
5. Step 5: Solve for x
   x = 11,604,324,006,144/1,689,432
6. Step 6: Final answer
   x = 6,868,772.47