Finding the Third Proportional to 3,149,688 and 6,509,328

Step by Step Solution

1. Step 1: Write the proportion equation
   3,149,688 : 6,509,328 = 6,509,328 : x
2. Step 2: Convert to fraction form
   3,149,688/6,509,328 = 6,509,328/x
3. Step 3: Cross multiply
   3,149,688x = 6,509,328 × 6,509,328
4. Step 4: Simplify right side
   3,149,688x = 42,371,351,011,584
5. Step 5: Solve for x
   x = 42,371,351,011,584/3,149,688
6. Step 6: Final answer
   x = 13,452,554.99