Finding the Third Proportional to 553,548 and 707,323.50

Step by Step Solution

1. Step 1: Write the proportion equation
   553,548 : 707,323.50 = 707,323.50 : x
2. Step 2: Convert to fraction form
   553,548/707,323.50 = 707,323.50/x
3. Step 3: Cross multiply
   553,548x = 707,323.50 × 707,323.50
4. Step 4: Simplify right side
   553,548x = 500,306,533,652.25
5. Step 5: Solve for x
   x = 500,306,533,652.25/553,548
6. Step 6: Final answer
   x = 903,817.80