Finding the Third Proportional to 4,991,680 and 7,300,320

Step by Step Solution

1. Step 1: Write the proportion equation
   4,991,680 : 7,300,320 = 7,300,320 : x
2. Step 2: Convert to fraction form
   4,991,680/7,300,320 = 7,300,320/x
3. Step 3: Cross multiply
   4,991,680x = 7,300,320 × 7,300,320
4. Step 4: Simplify right side
   4,991,680x = 53,294,672,102,400
5. Step 5: Solve for x
   x = 53,294,672,102,400/4,991,680
6. Step 6: Final answer
   x = 10,676,700.45