Finding the Third Proportional to 191,610 and 290,065

Step by Step Solution

1. Step 1: Write the proportion equation
   191,610 : 290,065 = 290,065 : x
2. Step 2: Convert to fraction form
   191,610/290,065 = 290,065/x
3. Step 3: Cross multiply
   191,610x = 290,065 × 290,065
4. Step 4: Simplify right side
   191,610x = 84,137,704,225
5. Step 5: Solve for x
   x = 84,137,704,225/191,610
6. Step 6: Final answer
   x = 439,109.15