Finding the Third Proportional to 5,186,580 and 7,611,710

Step by Step Solution

1. Step 1: Write the proportion equation
   5,186,580 : 7,611,710 = 7,611,710 : x
2. Step 2: Convert to fraction form
   5,186,580/7,611,710 = 7,611,710/x
3. Step 3: Cross multiply
   5,186,580x = 7,611,710 × 7,611,710
4. Step 4: Simplify right side
   5,186,580x = 57,938,129,124,100
5. Step 5: Solve for x
   x = 57,938,129,124,100/5,186,580
6. Step 6: Final answer
   x = 11,170,777.11