Finding the Third Proportional to 7,188,390 and 15,636,492

Step by Step Solution

1. Step 1: Write the proportion equation
   7,188,390 : 15,636,492 = 15,636,492 : x
2. Step 2: Convert to fraction form
   7,188,390/15,636,492 = 15,636,492/x
3. Step 3: Cross multiply
   7,188,390x = 15,636,492 × 15,636,492
4. Step 4: Simplify right side
   7,188,390x = 244,499,882,066,064
5. Step 5: Solve for x
   x = 244,499,882,066,064/7,188,390
6. Step 6: Final answer
   x = 34,013,163.18