Finding the Third Proportional to 3,989,592 and 8,262,972

Step by Step Solution

1. Step 1: Write the proportion equation
   3,989,592 : 8,262,972 = 8,262,972 : x
2. Step 2: Convert to fraction form
   3,989,592/8,262,972 = 8,262,972/x
3. Step 3: Cross multiply
   3,989,592x = 8,262,972 × 8,262,972
4. Step 4: Simplify right side
   3,989,592x = 68,276,706,272,784
5. Step 5: Solve for x
   x = 68,276,706,272,784/3,989,592
6. Step 6: Final answer
   x = 17,113,706.43