Finding the Third Proportional to 552,906 and 742,987.69

Step by Step Solution

1. Step 1: Write the proportion equation
   552,906 : 742,987.69 = 742,987.69 : x
2. Step 2: Convert to fraction form
   552,906/742,987.69 = 742,987.69/x
3. Step 3: Cross multiply
   552,906x = 742,987.69 × 742,987.69
4. Step 4: Simplify right side
   552,906x = 552,030,703,776.60
5. Step 5: Solve for x
   x = 552,030,703,776.60/552,906
6. Step 6: Final answer
   x = 998,416.92