Finding the Third Proportional to 123,485,521 and 243,848,005

Step by Step Solution

1. Step 1: Write the proportion equation
   123,485,521 : 243,848,005 = 243,848,005 : x
2. Step 2: Convert to fraction form
   123,485,521/243,848,005 = 243,848,005/x
3. Step 3: Cross multiply
   123,485,521x = 243,848,005 × 243,848,005
4. Step 4: Simplify right side
   123,485,521x = 59,461,849,542,480,024
5. Step 5: Solve for x
   x = 59,461,849,542,480,024/123,485,521
6. Step 6: Final answer
   x = 481,528,919.84