Finding the Third Proportional to 31,398,499.13 and 42,408,820.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,398,499.13 : 42,408,820.69 = 42,408,820.69 : x
2. Step 2: Convert to fraction form
   31,398,499.13/42,408,820.69 = 42,408,820.69/x
3. Step 3: Cross multiply
   31,398,499.13x = 42,408,820.69 × 42,408,820.69
4. Step 4: Simplify right side
   31,398,499.13x = 1,798,508,072,104,528
5. Step 5: Solve for x
   x = 1,798,508,072,104,528/31,398,499.13
6. Step 6: Final answer
   x = 57,280,065.04