Finding the Third Proportional to 136,116 and 210,289.50

Step by Step Solution

1. Step 1: Write the proportion equation
   136,116 : 210,289.50 = 210,289.50 : x
2. Step 2: Convert to fraction form
   136,116/210,289.50 = 210,289.50/x
3. Step 3: Cross multiply
   136,116x = 210,289.50 × 210,289.50
4. Step 4: Simplify right side
   136,116x = 44,221,673,810.25
5. Step 5: Solve for x
   x = 44,221,673,810.25/136,116
6. Step 6: Final answer
   x = 324,882.26