Finding the Third Proportional to 9,501,978 and 12,909,606

Step by Step Solution

1. Step 1: Write the proportion equation
   9,501,978 : 12,909,606 = 12,909,606 : x
2. Step 2: Convert to fraction form
   9,501,978/12,909,606 = 12,909,606/x
3. Step 3: Cross multiply
   9,501,978x = 12,909,606 × 12,909,606
4. Step 4: Simplify right side
   9,501,978x = 166,657,927,075,236
5. Step 5: Solve for x
   x = 166,657,927,075,236/9,501,978
6. Step 6: Final answer
   x = 17,539,287.83