Finding the Third Proportional to 2,558,580 and 5,298,312

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558,580 : 5,298,312 = 5,298,312 : x
2. Step 2: Convert to fraction form
   2,558,580/5,298,312 = 5,298,312/x
3. Step 3: Cross multiply
   2,558,580x = 5,298,312 × 5,298,312
4. Step 4: Simplify right side
   2,558,580x = 28,072,110,049,344
5. Step 5: Solve for x
   x = 28,072,110,049,344/2,558,580
6. Step 6: Final answer
   x = 10,971,753.88