Finding the Third Proportional to 346,300.50 and 520,453.50

Step by Step Solution

1. Step 1: Write the proportion equation
   346,300.50 : 520,453.50 = 520,453.50 : x
2. Step 2: Convert to fraction form
   346,300.50/520,453.50 = 520,453.50/x
3. Step 3: Cross multiply
   346,300.50x = 520,453.50 × 520,453.50
4. Step 4: Simplify right side
   346,300.50x = 270,871,845,662.25
5. Step 5: Solve for x
   x = 270,871,845,662.25/346,300.50
6. Step 6: Final answer
   x = 782,187.28