Finding the Third Proportional to 272,427,048 and 422,994,978

Step by Step Solution

1. Step 1: Write the proportion equation
   272,427,048 : 422,994,978 = 422,994,978 : x
2. Step 2: Convert to fraction form
   272,427,048/422,994,978 = 422,994,978/x
3. Step 3: Cross multiply
   272,427,048x = 422,994,978 × 422,994,978
4. Step 4: Simplify right side
   272,427,048x = 178,924,751,413,220,480
5. Step 5: Solve for x
   x = 178,924,751,413,220,480/272,427,048
6. Step 6: Final answer
   x = 656,780,421.50