Finding the Third Proportional to 134,308 and 287,053

Step by Step Solution

1. Step 1: Write the proportion equation
   134,308 : 287,053 = 287,053 : x
2. Step 2: Convert to fraction form
   134,308/287,053 = 287,053/x
3. Step 3: Cross multiply
   134,308x = 287,053 × 287,053
4. Step 4: Simplify right side
   134,308x = 82,399,424,809
5. Step 5: Solve for x
   x = 82,399,424,809/134,308
6. Step 6: Final answer
   x = 613,510.92