Finding the Third Proportional to 141,120 and 301,640

Step by Step Solution

1. Step 1: Write the proportion equation
   141,120 : 301,640 = 301,640 : x
2. Step 2: Convert to fraction form
   141,120/301,640 = 301,640/x
3. Step 3: Cross multiply
   141,120x = 301,640 × 301,640
4. Step 4: Simplify right side
   141,120x = 90,986,689,600
5. Step 5: Solve for x
   x = 90,986,689,600/141,120
6. Step 6: Final answer
   x = 644,746.95