Finding the Third Proportional to 141,300 and 310,488

Step by Step Solution

1. Step 1: Write the proportion equation
   141,300 : 310,488 = 310,488 : x
2. Step 2: Convert to fraction form
   141,300/310,488 = 310,488/x
3. Step 3: Cross multiply
   141,300x = 310,488 × 310,488
4. Step 4: Simplify right side
   141,300x = 96,402,798,144
5. Step 5: Solve for x
   x = 96,402,798,144/141,300
6. Step 6: Final answer
   x = 682,256.18