Finding the Third Proportional to 191,560.50 and 290,007

Step by Step Solution

1. Step 1: Write the proportion equation
   191,560.50 : 290,007 = 290,007 : x
2. Step 2: Convert to fraction form
   191,560.50/290,007 = 290,007/x
3. Step 3: Cross multiply
   191,560.50x = 290,007 × 290,007
4. Step 4: Simplify right side
   191,560.50x = 84,104,060,049
5. Step 5: Solve for x
   x = 84,104,060,049/191,560.50
6. Step 6: Final answer
   x = 439,046.99