Finding the Third Proportional to 276,710.50 and 423,095

Step by Step Solution

1. Step 1: Write the proportion equation
   276,710.50 : 423,095 = 423,095 : x
2. Step 2: Convert to fraction form
   276,710.50/423,095 = 423,095/x
3. Step 3: Cross multiply
   276,710.50x = 423,095 × 423,095
4. Step 4: Simplify right side
   276,710.50x = 179,009,379,025
5. Step 5: Solve for x
   x = 179,009,379,025/276,710.50
6. Step 6: Final answer
   x = 646,919.36