Finding the Third Proportional to 126,402 and 190,404

Step by Step Solution

1. Step 1: Write the proportion equation
   126,402 : 190,404 = 190,404 : x
2. Step 2: Convert to fraction form
   126,402/190,404 = 190,404/x
3. Step 3: Cross multiply
   126,402x = 190,404 × 190,404
4. Step 4: Simplify right side
   126,402x = 36,253,683,216
5. Step 5: Solve for x
   x = 36,253,683,216/126,402
6. Step 6: Final answer
   x = 286,812.58