Finding the Third Proportional to 215,865 and 362,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   215,865 : 362,191.50 = 362,191.50 : x
2. Step 2: Convert to fraction form
   215,865/362,191.50 = 362,191.50/x
3. Step 3: Cross multiply
   215,865x = 362,191.50 × 362,191.50
4. Step 4: Simplify right side
   215,865x = 131,182,682,672.25
5. Step 5: Solve for x
   x = 131,182,682,672.25/215,865
6. Step 6: Final answer
   x = 607,707.05