Finding the Third Proportional to 91,719 and 189,148.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,719 : 189,148.50 = 189,148.50 : x
2. Step 2: Convert to fraction form
   91,719/189,148.50 = 189,148.50/x
3. Step 3: Cross multiply
   91,719x = 189,148.50 × 189,148.50
4. Step 4: Simplify right side
   91,719x = 35,777,155,052.25
5. Step 5: Solve for x
   x = 35,777,155,052.25/91,719
6. Step 6: Final answer
   x = 390,073.54