Finding the Third Proportional to 3,492,128 and 7,718,432

Step by Step Solution

1. Step 1: Write the proportion equation
   3,492,128 : 7,718,432 = 7,718,432 : x
2. Step 2: Convert to fraction form
   3,492,128/7,718,432 = 7,718,432/x
3. Step 3: Cross multiply
   3,492,128x = 7,718,432 × 7,718,432
4. Step 4: Simplify right side
   3,492,128x = 59,574,192,538,624
5. Step 5: Solve for x
   x = 59,574,192,538,624/3,492,128
6. Step 6: Final answer
   x = 17,059,567.27