Finding the Third Proportional to 191,709 and 403,249.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,709 : 403,249.50 = 403,249.50 : x
2. Step 2: Convert to fraction form
   191,709/403,249.50 = 403,249.50/x
3. Step 3: Cross multiply
   191,709x = 403,249.50 × 403,249.50
4. Step 4: Simplify right side
   191,709x = 162,610,159,250.25
5. Step 5: Solve for x
   x = 162,610,159,250.25/191,709
6. Step 6: Final answer
   x = 848,213.49