Finding the Third Proportional to 85,448.06 and 186,985.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,448.06 : 186,985.31 = 186,985.31 : x
2. Step 2: Convert to fraction form
   85,448.06/186,985.31 = 186,985.31/x
3. Step 3: Cross multiply
   85,448.06x = 186,985.31 × 186,985.31
4. Step 4: Simplify right side
   85,448.06x = 34,963,507,090.72
5. Step 5: Solve for x
   x = 34,963,507,090.72/85,448.06
6. Step 6: Final answer
   x = 409,178.47