Finding the Third Proportional to 1,343,920,221 and 1,868,613,643.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343,920,221 : 1,868,613,643.50 = 1,868,613,643.50 : x
2. Step 2: Convert to fraction form
   1,343,920,221/1,868,613,643.50 = 1,868,613,643.50/x
3. Step 3: Cross multiply
   1,343,920,221x = 1,868,613,643.50 × 1,868,613,643.50
4. Step 4: Simplify right side
   1,343,920,221x = 3,491,716,948,674,344,960
5. Step 5: Solve for x
   x = 3,491,716,948,674,344,960/1,343,920,221
6. Step 6: Final answer
   x = 2,598,157,907.08