Finding the Third Proportional to 191,655 and 407,893.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,655 : 407,893.50 = 407,893.50 : x
2. Step 2: Convert to fraction form
   191,655/407,893.50 = 407,893.50/x
3. Step 3: Cross multiply
   191,655x = 407,893.50 × 407,893.50
4. Step 4: Simplify right side
   191,655x = 166,377,107,342.25
5. Step 5: Solve for x
   x = 166,377,107,342.25/191,655
6. Step 6: Final answer
   x = 868,107.31