Finding the Third Proportional to 121,900,762 and 260,333,786

Step by Step Solution

1. Step 1: Write the proportion equation
   121,900,762 : 260,333,786 = 260,333,786 : x
2. Step 2: Convert to fraction form
   121,900,762/260,333,786 = 260,333,786/x
3. Step 3: Cross multiply
   121,900,762x = 260,333,786 × 260,333,786
4. Step 4: Simplify right side
   121,900,762x = 67,773,680,133,093,792
5. Step 5: Solve for x
   x = 67,773,680,133,093,792/121,900,762
6. Step 6: Final answer
   x = 555,974,212.31