Finding the Third Proportional to 209,707,417 and 314,561,158

Step by Step Solution

1. Step 1: Write the proportion equation
   209,707,417 : 314,561,158 = 314,561,158 : x
2. Step 2: Convert to fraction form
   209,707,417/314,561,158 = 314,561,158/x
3. Step 3: Cross multiply
   209,707,417x = 314,561,158 × 314,561,158
4. Step 4: Simplify right side
   209,707,417x = 98,948,722,122,300,960
5. Step 5: Solve for x
   x = 98,948,722,122,300,960/209,707,417
6. Step 6: Final answer
   x = 471,841,785.75