Finding the Third Proportional to 21,189.94 and 31,136.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,189.94 : 31,136.91 = 31,136.91 : x
2. Step 2: Convert to fraction form
   21,189.94/31,136.91 = 31,136.91/x
3. Step 3: Cross multiply
   21,189.94x = 31,136.91 × 31,136.91
4. Step 4: Simplify right side
   21,189.94x = 969,506,930.82
5. Step 5: Solve for x
   x = 969,506,930.82/21,189.94
6. Step 6: Final answer
   x = 45,753.18