Finding the Third Proportional to 121,788 and 187,303.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,788 : 187,303.50 = 187,303.50 : x
2. Step 2: Convert to fraction form
   121,788/187,303.50 = 187,303.50/x
3. Step 3: Cross multiply
   121,788x = 187,303.50 × 187,303.50
4. Step 4: Simplify right side
   121,788x = 35,082,601,112.25
5. Step 5: Solve for x
   x = 35,082,601,112.25/121,788
6. Step 6: Final answer
   x = 288,062.87