Finding the Third Proportional to 191,818.50 and 290,393

Step by Step Solution

1. Step 1: Write the proportion equation
   191,818.50 : 290,393 = 290,393 : x
2. Step 2: Convert to fraction form
   191,818.50/290,393 = 290,393/x
3. Step 3: Cross multiply
   191,818.50x = 290,393 × 290,393
4. Step 4: Simplify right side
   191,818.50x = 84,328,094,449
5. Step 5: Solve for x
   x = 84,328,094,449/191,818.50
6. Step 6: Final answer
   x = 439,624.41