Finding the Third Proportional to 12,218,451 and 18,116,316

Step by Step Solution

1. Step 1: Write the proportion equation
   12,218,451 : 18,116,316 = 18,116,316 : x
2. Step 2: Convert to fraction form
   12,218,451/18,116,316 = 18,116,316/x
3. Step 3: Cross multiply
   12,218,451x = 18,116,316 × 18,116,316
4. Step 4: Simplify right side
   12,218,451x = 328,200,905,411,856
5. Step 5: Solve for x
   x = 328,200,905,411,856/12,218,451
6. Step 6: Final answer
   x = 26,861,089.46