Finding the Third Proportional to 191,612 and 290,068

Step by Step Solution

1. Step 1: Write the proportion equation
   191,612 : 290,068 = 290,068 : x
2. Step 2: Convert to fraction form
   191,612/290,068 = 290,068/x
3. Step 3: Cross multiply
   191,612x = 290,068 × 290,068
4. Step 4: Simplify right side
   191,612x = 84,139,444,624
5. Step 5: Solve for x
   x = 84,139,444,624/191,612
6. Step 6: Final answer
   x = 439,113.65