Finding the Third Proportional to 124,740 and 189,985.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,740 : 189,985.50 = 189,985.50 : x
2. Step 2: Convert to fraction form
   124,740/189,985.50 = 189,985.50/x
3. Step 3: Cross multiply
   124,740x = 189,985.50 × 189,985.50
4. Step 4: Simplify right side
   124,740x = 36,094,490,210.25
5. Step 5: Solve for x
   x = 36,094,490,210.25/124,740
6. Step 6: Final answer
   x = 289,357.79