Finding the Third Proportional to 191,607 and 290,061

Step by Step Solution

1. Step 1: Write the proportion equation
   191,607 : 290,061 = 290,061 : x
2. Step 2: Convert to fraction form
   191,607/290,061 = 290,061/x
3. Step 3: Cross multiply
   191,607x = 290,061 × 290,061
4. Step 4: Simplify right side
   191,607x = 84,135,383,721
5. Step 5: Solve for x
   x = 84,135,383,721/191,607
6. Step 6: Final answer
   x = 439,103.91