Finding the Third Proportional to 4,386,402 and 9,781,354

Step by Step Solution

1. Step 1: Write the proportion equation
   4,386,402 : 9,781,354 = 9,781,354 : x
2. Step 2: Convert to fraction form
   4,386,402/9,781,354 = 9,781,354/x
3. Step 3: Cross multiply
   4,386,402x = 9,781,354 × 9,781,354
4. Step 4: Simplify right side
   4,386,402x = 95,674,886,073,316
5. Step 5: Solve for x
   x = 95,674,886,073,316/4,386,402
6. Step 6: Final answer
   x = 21,811,700.36