Finding the Third Proportional to 5,421,842 and 7,228,316

Step by Step Solution

1. Step 1: Write the proportion equation
   5,421,842 : 7,228,316 = 7,228,316 : x
2. Step 2: Convert to fraction form
   5,421,842/7,228,316 = 7,228,316/x
3. Step 3: Cross multiply
   5,421,842x = 7,228,316 × 7,228,316
4. Step 4: Simplify right side
   5,421,842x = 52,248,552,195,856
5. Step 5: Solve for x
   x = 52,248,552,195,856/5,421,842
6. Step 6: Final answer
   x = 9,636,679.23