Finding the Third Proportional to 245,861 and 370,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,861 : 370,522.50 = 370,522.50 : x
2. Step 2: Convert to fraction form
   245,861/370,522.50 = 370,522.50/x
3. Step 3: Cross multiply
   245,861x = 370,522.50 × 370,522.50
4. Step 4: Simplify right side
   245,861x = 137,286,923,006.25
5. Step 5: Solve for x
   x = 137,286,923,006.25/245,861
6. Step 6: Final answer
   x = 558,392.44