Finding the Third Proportional to 307,803 and 472,801.50

Step by Step Solution

1. Step 1: Write the proportion equation
   307,803 : 472,801.50 = 472,801.50 : x
2. Step 2: Convert to fraction form
   307,803/472,801.50 = 472,801.50/x
3. Step 3: Cross multiply
   307,803x = 472,801.50 × 472,801.50
4. Step 4: Simplify right side
   307,803x = 223,541,258,402.25
5. Step 5: Solve for x
   x = 223,541,258,402.25/307,803
6. Step 6: Final answer
   x = 726,247.82