Finding the Third Proportional to 431,983 and 608,061

Step by Step Solution

1. Step 1: Write the proportion equation
   431,983 : 608,061 = 608,061 : x
2. Step 2: Convert to fraction form
   431,983/608,061 = 608,061/x
3. Step 3: Cross multiply
   431,983x = 608,061 × 608,061
4. Step 4: Simplify right side
   431,983x = 369,738,179,721
5. Step 5: Solve for x
   x = 369,738,179,721/431,983
6. Step 6: Final answer
   x = 855,909.10