Finding the Third Proportional to 3,553,520 and 7,815,472

Step by Step Solution

1. Step 1: Write the proportion equation
   3,553,520 : 7,815,472 = 7,815,472 : x
2. Step 2: Convert to fraction form
   3,553,520/7,815,472 = 7,815,472/x
3. Step 3: Cross multiply
   3,553,520x = 7,815,472 × 7,815,472
4. Step 4: Simplify right side
   3,553,520x = 61,081,602,582,784
5. Step 5: Solve for x
   x = 61,081,602,582,784/3,553,520
6. Step 6: Final answer
   x = 17,189,041.45