Finding the Third Proportional to 370,308 and 553,039.75

Step by Step Solution

1. Step 1: Write the proportion equation
   370,308 : 553,039.75 = 553,039.75 : x
2. Step 2: Convert to fraction form
   370,308/553,039.75 = 553,039.75/x
3. Step 3: Cross multiply
   370,308x = 553,039.75 × 553,039.75
4. Step 4: Simplify right side
   370,308x = 305,852,965,080.06
5. Step 5: Solve for x
   x = 305,852,965,080.06/370,308
6. Step 6: Final answer
   x = 825,942.09