Finding the Third Proportional to 20,936,672 and 31,509,840

Step by Step Solution

1. Step 1: Write the proportion equation
   20,936,672 : 31,509,840 = 31,509,840 : x
2. Step 2: Convert to fraction form
   20,936,672/31,509,840 = 31,509,840/x
3. Step 3: Cross multiply
   20,936,672x = 31,509,840 × 31,509,840
4. Step 4: Simplify right side
   20,936,672x = 992,870,016,825,600
5. Step 5: Solve for x
   x = 992,870,016,825,600/20,936,672
6. Step 6: Final answer
   x = 47,422,532.90