Finding the Third Proportional to 21,720,409.50 and 31,870,539

Step by Step Solution

1. Step 1: Write the proportion equation
   21,720,409.50 : 31,870,539 = 31,870,539 : x
2. Step 2: Convert to fraction form
   21,720,409.50/31,870,539 = 31,870,539/x
3. Step 3: Cross multiply
   21,720,409.50x = 31,870,539 × 31,870,539
4. Step 4: Simplify right side
   21,720,409.50x = 1,015,731,256,150,521
5. Step 5: Solve for x
   x = 1,015,731,256,150,521/21,720,409.50
6. Step 6: Final answer
   x = 46,763,909.13