Finding the Third Proportional to 31,078,656 and 63,389,952

Step by Step Solution

1. Step 1: Write the proportion equation
   31,078,656 : 63,389,952 = 63,389,952 : x
2. Step 2: Convert to fraction form
   31,078,656/63,389,952 = 63,389,952/x
3. Step 3: Cross multiply
   31,078,656x = 63,389,952 × 63,389,952
4. Step 4: Simplify right side
   31,078,656x = 4,018,286,014,562,304
5. Step 5: Solve for x
   x = 4,018,286,014,562,304/31,078,656
6. Step 6: Final answer
   x = 129,294,072.90