Finding the Third Proportional to 164,109 and 386,377.50

Step by Step Solution

1. Step 1: Write the proportion equation
   164,109 : 386,377.50 = 386,377.50 : x
2. Step 2: Convert to fraction form
   164,109/386,377.50 = 386,377.50/x
3. Step 3: Cross multiply
   164,109x = 386,377.50 × 386,377.50
4. Step 4: Simplify right side
   164,109x = 149,287,572,506.25
5. Step 5: Solve for x
   x = 149,287,572,506.25/164,109
6. Step 6: Final answer
   x = 909,685.47