Finding the Third Proportional to 3,953,312 and 8,663,066

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953,312 : 8,663,066 = 8,663,066 : x
2. Step 2: Convert to fraction form
   3,953,312/8,663,066 = 8,663,066/x
3. Step 3: Cross multiply
   3,953,312x = 8,663,066 × 8,663,066
4. Step 4: Simplify right side
   3,953,312x = 75,048,712,520,356
5. Step 5: Solve for x
   x = 75,048,712,520,356/3,953,312
6. Step 6: Final answer
   x = 18,983,756.54