Finding the Third Proportional to 19,820.50 and 30,788.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,820.50 : 30,788.75 = 30,788.75 : x
2. Step 2: Convert to fraction form
   19,820.50/30,788.75 = 30,788.75/x
3. Step 3: Cross multiply
   19,820.50x = 30,788.75 × 30,788.75
4. Step 4: Simplify right side
   19,820.50x = 947,947,126.56
5. Step 5: Solve for x
   x = 947,947,126.56/19,820.50
6. Step 6: Final answer
   x = 47,826.60