Finding the Third Proportional to 9,286,840 and 12,611,310

Step by Step Solution

1. Step 1: Write the proportion equation
   9,286,840 : 12,611,310 = 12,611,310 : x
2. Step 2: Convert to fraction form
   9,286,840/12,611,310 = 12,611,310/x
3. Step 3: Cross multiply
   9,286,840x = 12,611,310 × 12,611,310
4. Step 4: Simplify right side
   9,286,840x = 159,045,139,916,100
5. Step 5: Solve for x
   x = 159,045,139,916,100/9,286,840
6. Step 6: Final answer
   x = 17,125,861.96