Finding the Third Proportional to 236,979 and 385,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   236,979 : 385,009.50 = 385,009.50 : x
2. Step 2: Convert to fraction form
   236,979/385,009.50 = 385,009.50/x
3. Step 3: Cross multiply
   236,979x = 385,009.50 × 385,009.50
4. Step 4: Simplify right side
   236,979x = 148,232,315,090.25
5. Step 5: Solve for x
   x = 148,232,315,090.25/236,979
6. Step 6: Final answer
   x = 625,508.23