Finding the Third Proportional to 85,907 and 177,706.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,907 : 177,706.50 = 177,706.50 : x
2. Step 2: Convert to fraction form
   85,907/177,706.50 = 177,706.50/x
3. Step 3: Cross multiply
   85,907x = 177,706.50 × 177,706.50
4. Step 4: Simplify right side
   85,907x = 31,579,600,142.25
5. Step 5: Solve for x
   x = 31,579,600,142.25/85,907
6. Step 6: Final answer
   x = 367,602.18