Finding the Third Proportional to 265,099.50 and 401,510.25

Step by Step Solution

1. Step 1: Write the proportion equation
   265,099.50 : 401,510.25 = 401,510.25 : x
2. Step 2: Convert to fraction form
   265,099.50/401,510.25 = 401,510.25/x
3. Step 3: Cross multiply
   265,099.50x = 401,510.25 × 401,510.25
4. Step 4: Simplify right side
   265,099.50x = 161,210,480,855.06
5. Step 5: Solve for x
   x = 161,210,480,855.06/265,099.50
6. Step 6: Final answer
   x = 608,113.11