Finding the Third Proportional to 397,242 and 607,783.50

Step by Step Solution

1. Step 1: Write the proportion equation
   397,242 : 607,783.50 = 607,783.50 : x
2. Step 2: Convert to fraction form
   397,242/607,783.50 = 607,783.50/x
3. Step 3: Cross multiply
   397,242x = 607,783.50 × 607,783.50
4. Step 4: Simplify right side
   397,242x = 369,400,782,872.25
5. Step 5: Solve for x
   x = 369,400,782,872.25/397,242
6. Step 6: Final answer
   x = 929,913.71