Finding the Third Proportional to 392,429 and 607,507.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,429 : 607,507.50 = 607,507.50 : x
2. Step 2: Convert to fraction form
   392,429/607,507.50 = 607,507.50/x
3. Step 3: Cross multiply
   392,429x = 607,507.50 × 607,507.50
4. Step 4: Simplify right side
   392,429x = 369,065,362,556.25
5. Step 5: Solve for x
   x = 369,065,362,556.25/392,429
6. Step 6: Final answer
   x = 940,464.04