Finding the Third Proportional to 4,931,724 and 7,738,370

Step by Step Solution

1. Step 1: Write the proportion equation
   4,931,724 : 7,738,370 = 7,738,370 : x
2. Step 2: Convert to fraction form
   4,931,724/7,738,370 = 7,738,370/x
3. Step 3: Cross multiply
   4,931,724x = 7,738,370 × 7,738,370
4. Step 4: Simplify right side
   4,931,724x = 59,882,370,256,900
5. Step 5: Solve for x
   x = 59,882,370,256,900/4,931,724
6. Step 6: Final answer
   x = 12,142,279.30