Finding the Third Proportional to 86,806,690.50 and 187,243,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,806,690.50 : 187,243,066.50 = 187,243,066.50 : x
2. Step 2: Convert to fraction form
   86,806,690.50/187,243,066.50 = 187,243,066.50/x
3. Step 3: Cross multiply
   86,806,690.50x = 187,243,066.50 × 187,243,066.50
4. Step 4: Simplify right side
   86,806,690.50x = 35,059,965,952,323,424
5. Step 5: Solve for x
   x = 35,059,965,952,323,424/86,806,690.50
6. Step 6: Final answer
   x = 403,885,527.15