Finding the Third Proportional to 122,453 and 189,140

Step by Step Solution

1. Step 1: Write the proportion equation
   122,453 : 189,140 = 189,140 : x
2. Step 2: Convert to fraction form
   122,453/189,140 = 189,140/x
3. Step 3: Cross multiply
   122,453x = 189,140 × 189,140
4. Step 4: Simplify right side
   122,453x = 35,773,939,600
5. Step 5: Solve for x
   x = 35,773,939,600/122,453
6. Step 6: Final answer
   x = 292,144.25