Finding the Third Proportional to 292,090.50 and 426,645

Step by Step Solution

1. Step 1: Write the proportion equation
   292,090.50 : 426,645 = 426,645 : x
2. Step 2: Convert to fraction form
   292,090.50/426,645 = 426,645/x
3. Step 3: Cross multiply
   292,090.50x = 426,645 × 426,645
4. Step 4: Simplify right side
   292,090.50x = 182,025,956,025
5. Step 5: Solve for x
   x = 182,025,956,025/292,090.50
6. Step 6: Final answer
   x = 623,183.42