Finding the Third Proportional to 21,720,418 and 31,870,550

Step by Step Solution

1. Step 1: Write the proportion equation
   21,720,418 : 31,870,550 = 31,870,550 : x
2. Step 2: Convert to fraction form
   21,720,418/31,870,550 = 31,870,550/x
3. Step 3: Cross multiply
   21,720,418x = 31,870,550 × 31,870,550
4. Step 4: Simplify right side
   21,720,418x = 1,015,731,957,302,500
5. Step 5: Solve for x
   x = 1,015,731,957,302,500/21,720,418
6. Step 6: Final answer
   x = 46,763,923.11