Finding the Third Proportional to 3,420,467,572 and 5,287,776,870

Step by Step Solution

1. Step 1: Write the proportion equation
   3,420,467,572 : 5,287,776,870 = 5,287,776,870 : x
2. Step 2: Convert to fraction form
   3,420,467,572/5,287,776,870 = 5,287,776,870/x
3. Step 3: Cross multiply
   3,420,467,572x = 5,287,776,870 × 5,287,776,870
4. Step 4: Simplify right side
   3,420,467,572x = 27,960,584,226,906,996,736
5. Step 5: Solve for x
   x = 27,960,584,226,906,996,736/3,420,467,572
6. Step 6: Final answer
   x = 8,174,491,831.41