Finding the Third Proportional to 191,887 and 268,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,887 : 268,405.50 = 268,405.50 : x
2. Step 2: Convert to fraction form
   191,887/268,405.50 = 268,405.50/x
3. Step 3: Cross multiply
   191,887x = 268,405.50 × 268,405.50
4. Step 4: Simplify right side
   191,887x = 72,041,512,430.25
5. Step 5: Solve for x
   x = 72,041,512,430.25/191,887
6. Step 6: Final answer
   x = 375,437.17