Finding the Third Proportional to 5,721,131 and 8,634,902

Step by Step Solution

1. Step 1: Write the proportion equation
   5,721,131 : 8,634,902 = 8,634,902 : x
2. Step 2: Convert to fraction form
   5,721,131/8,634,902 = 8,634,902/x
3. Step 3: Cross multiply
   5,721,131x = 8,634,902 × 8,634,902
4. Step 4: Simplify right side
   5,721,131x = 74,561,532,549,604
5. Step 5: Solve for x
   x = 74,561,532,549,604/5,721,131
6. Step 6: Final answer
   x = 13,032,656.05