Finding the Third Proportional to 191,558 and 290,003

Step by Step Solution

1. Step 1: Write the proportion equation
   191,558 : 290,003 = 290,003 : x
2. Step 2: Convert to fraction form
   191,558/290,003 = 290,003/x
3. Step 3: Cross multiply
   191,558x = 290,003 × 290,003
4. Step 4: Simplify right side
   191,558x = 84,101,740,009
5. Step 5: Solve for x
   x = 84,101,740,009/191,558
6. Step 6: Final answer
   x = 439,040.60