Finding the Third Proportional to 19,386 and 28,713.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,386 : 28,713.50 = 28,713.50 : x
2. Step 2: Convert to fraction form
   19,386/28,713.50 = 28,713.50/x
3. Step 3: Cross multiply
   19,386x = 28,713.50 × 28,713.50
4. Step 4: Simplify right side
   19,386x = 824,465,082.25
5. Step 5: Solve for x
   x = 824,465,082.25/19,386
6. Step 6: Final answer
   x = 42,528.89