Finding the Third Proportional to 21,427.50 and 31,303.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,427.50 : 31,303.50 = 31,303.50 : x
2. Step 2: Convert to fraction form
   21,427.50/31,303.50 = 31,303.50/x
3. Step 3: Cross multiply
   21,427.50x = 31,303.50 × 31,303.50
4. Step 4: Simplify right side
   21,427.50x = 979,909,112.25
5. Step 5: Solve for x
   x = 979,909,112.25/21,427.50
6. Step 6: Final answer
   x = 45,731.38