Finding the Third Proportional to 4,059,516 and 8,731,392

Step by Step Solution

1. Step 1: Write the proportion equation
   4,059,516 : 8,731,392 = 8,731,392 : x
2. Step 2: Convert to fraction form
   4,059,516/8,731,392 = 8,731,392/x
3. Step 3: Cross multiply
   4,059,516x = 8,731,392 × 8,731,392
4. Step 4: Simplify right side
   4,059,516x = 76,237,206,257,664
5. Step 5: Solve for x
   x = 76,237,206,257,664/4,059,516
6. Step 6: Final answer
   x = 18,779,875.79