Finding the Third Proportional to 265,116.50 and 401,536.50

Step by Step Solution

1. Step 1: Write the proportion equation
   265,116.50 : 401,536.50 = 401,536.50 : x
2. Step 2: Convert to fraction form
   265,116.50/401,536.50 = 401,536.50/x
3. Step 3: Cross multiply
   265,116.50x = 401,536.50 × 401,536.50
4. Step 4: Simplify right side
   265,116.50x = 161,231,560,832.25
5. Step 5: Solve for x
   x = 161,231,560,832.25/265,116.50
6. Step 6: Final answer
   x = 608,153.63