Finding the Third Proportional to 238,171,820 and 515,920,426

Step by Step Solution

1. Step 1: Write the proportion equation
   238,171,820 : 515,920,426 = 515,920,426 : x
2. Step 2: Convert to fraction form
   238,171,820/515,920,426 = 515,920,426/x
3. Step 3: Cross multiply
   238,171,820x = 515,920,426 × 515,920,426
4. Step 4: Simplify right side
   238,171,820x = 266,173,885,964,021,472
5. Step 5: Solve for x
   x = 266,173,885,964,021,472/238,171,820
6. Step 6: Final answer
   x = 1,117,570,861.09