Finding the Third Proportional to 264,415.50 and 402,819

Step by Step Solution

1. Step 1: Write the proportion equation
   264,415.50 : 402,819 = 402,819 : x
2. Step 2: Convert to fraction form
   264,415.50/402,819 = 402,819/x
3. Step 3: Cross multiply
   264,415.50x = 402,819 × 402,819
4. Step 4: Simplify right side
   264,415.50x = 162,263,146,761
5. Step 5: Solve for x
   x = 162,263,146,761/264,415.50
6. Step 6: Final answer
   x = 613,667.30