Finding the Third Proportional to 99,373,824 and 216,243,648

Step by Step Solution

1. Step 1: Write the proportion equation
   99,373,824 : 216,243,648 = 216,243,648 : x
2. Step 2: Convert to fraction form
   99,373,824/216,243,648 = 216,243,648/x
3. Step 3: Cross multiply
   99,373,824x = 216,243,648 × 216,243,648
4. Step 4: Simplify right side
   99,373,824x = 46,761,315,300,347,904
5. Step 5: Solve for x
   x = 46,761,315,300,347,904/99,373,824
6. Step 6: Final answer
   x = 470,559,684.82