Finding the Third Proportional to 21,720,412 and 31,870,542

Step by Step Solution

1. Step 1: Write the proportion equation
   21,720,412 : 31,870,542 = 31,870,542 : x
2. Step 2: Convert to fraction form
   21,720,412/31,870,542 = 31,870,542/x
3. Step 3: Cross multiply
   21,720,412x = 31,870,542 × 31,870,542
4. Step 4: Simplify right side
   21,720,412x = 1,015,731,447,373,764
5. Step 5: Solve for x
   x = 1,015,731,447,373,764/21,720,412
6. Step 6: Final answer
   x = 46,763,912.55