Finding the Third Proportional to 21,720,610 and 31,870,863

Step by Step Solution

1. Step 1: Write the proportion equation
   21,720,610 : 31,870,863 = 31,870,863 : x
2. Step 2: Convert to fraction form
   21,720,610/31,870,863 = 31,870,863/x
3. Step 3: Cross multiply
   21,720,610x = 31,870,863 × 31,870,863
4. Step 4: Simplify right side
   21,720,610x = 1,015,751,908,364,769
5. Step 5: Solve for x
   x = 1,015,751,908,364,769/21,720,610
6. Step 6: Final answer
   x = 46,764,428.27