Finding the Third Proportional to 163,617,822 and 247,123,456

Step by Step Solution

1. Step 1: Write the proportion equation
   163,617,822 : 247,123,456 = 247,123,456 : x
2. Step 2: Convert to fraction form
   163,617,822/247,123,456 = 247,123,456/x
3. Step 3: Cross multiply
   163,617,822x = 247,123,456 × 247,123,456
4. Step 4: Simplify right side
   163,617,822x = 61,070,002,505,383,936
5. Step 5: Solve for x
   x = 61,070,002,505,383,936/163,617,822
6. Step 6: Final answer
   x = 373,247,863.58